compat-cygwin.c

   1 /*
   2  * Cygwin Compatibility functions
   3  *
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21  * THE SOFTWARE.
  22  */
  23
  24
  25
  26 #include <sys/mman.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/stat.h>
  30
  31 #include "lib.h"
  32 #include "allocate.h"
  33 #include "token.h"
  34
  35 void *blob_alloc(unsigned long size)
  36 {
  37         void *ptr;
  38         size = (size + 4095) & ~4095;
  39         ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  40         if (ptr == MAP_FAILED)
  41                 ptr = NULL;
  42         else
  43                 memset(ptr, 0, size);
  44         return ptr;
  45 }
  46
  47 void blob_free(void *addr, unsigned long size)
  48 {
  49         size = (size + 4095) & ~4095;
  50         munmap(addr, size);
  51 }
  52
  53 long double string_to_ld(const char *nptr, char **endptr)
  54 {
  55         return strtod(nptr, endptr);
  56 }